*{
    margin: 0;
    padding: 0;
}
.footer{
    
    height: 600px;
    width: 1200px;
    /* border: 1px solid black; */
    margin: 0px auto;
    background-color: white;
}
.topfooter{
    
    width: 1200px;
    height: 80px;
   /*  border: 1px solid green; */
}
.topfooter li{
    list-style: none;
    float: left;
   
    margin-left: 60px;
    margin-top: 20px;
}
.topfooter li a{
    text-decoration: none;
    color: black; 
    font-size: 25px;
    cursor: pointer;
}
hr{
    height:1px;
    border:none;
    width: 1100px;
    margin-left: 50px;
    border-top:2px solid #F1F3F5;
}
.bigfooter{
    width: 1200px;
    height: 515px;
    /* border: 1px solid orange; */
    display: flex;

}

.bigfooter .btfooter{
    height: 515px;
    width: 210px;
    /* border: 1px solid green; */
}
.btfooter li{
    list-style: none;
    margin-top: 35px;
    margin-left: 10px;
}
.btfooter li a{
    
    text-decoration: none;
    color: grey;
    font-size: 20px;
}
.btfooter li a:hover{
    color: #CF0A2C;
}
.btfooter h4{
    margin-left: 10px;
    margin-top: 40px;
    font-size: 20px;
    font-family: '微软雅黑';
}
.btfooter span{
    display: block;
    margin-top: 15px;
    font-size: 22px;
}
.btfooter .bt{
    border: 1px solid black;
    font-size: 32px;
    border-radius: 50px;
    background-color: black;
    color: white;
    text-align: center;
    height: 60px;
    width: 180px;
    line-height: 60px;
    
}
.btfooter .bt a{
    margin-top: 20px;
    color: white;
    text-decoration: none;
    font-size: 25px;
    
}